Swift’s new song, which features Kendrick Lamar, opened at No. 3 the previous week but the song made a rare ascent to the pinnacle when the new chart was published on the weekend. It’s her fourth No. 1 on the ARIA Singles Chart and the third single from 1989 to reach the top spot, after “Shake It Off” (September 2014) and “Blank Space” (November 2014).

“Bad Blood,” the video for which earned its world premiere at the Billboard Music Awards, consigned Wiz Khalifa feat. Charlie Puth’s “See You Again” (Atlantic/Warner Music) to second spot on the Aussie singles list. Last week's No. 1, "You Don't Own Me" (RCA/Sony) by Grace featuring G-Eazy, is at No. 3.

Other key new entries this week include Guy Sebastian’s“Tonight Again” (Sony Music Australia), which debuted at No. 12. The homegrown singer performed the song at the previous weekend’s 2015 Eurovision Song Contest (Australia placed fifth in the final). Meanwhile, Adam Lambert’s “Ghost Town” (Warner Music) opened at No. 32, giving the U.S. pop star his first charting single Down Under since “For Your Entertainment” cracked the top 40 in November 2010.

On the albums chart,Daniels Johns’ solo debut Talk (Eleven/EMI) was nudged into second spot by the contemporary Christian group Hillsong United’sEmpire (Hillsong Music/Sony). Johns’ former band Silverchair released five albums, all of which peaked at No. 1. The soundtrack for Pitch Perfect 2 (Universal) holds at No. 3, while two new entrants filled out the top 5 -- the Eurovision Song Contest 2015 Vienna recording (SBS/Universal) and A$AP Rocky’sA.L.L.A.(At Long Last A$AP) (RCA/Sony).